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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:48:08                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              076/Fisher                                                VRSN:      W
                                                        076-903/Roby ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                1,451,174        1.1309             1,283,203               7              135         .022511381
      2           A                1,464,123        0.9993             1,465,149               7               72         .022841551
      3           A                1,468,659        0.9731             1,509,258              10               48         .037699651
      4           A                1,410,966        1.0546             1,337,916               9               26         .019689446
      5           D3              12,531,526        1.0016            12,511,508              16            2,094         .031003954
      6           G1               2,183,220        1.0827             2,016,459               4               12         .007384298
  RANDOM TOTALS:                  20,509,668                          20,123,493              53            2,387
  CATG J  EXCEPTION VALUES:        3,675,681                           3,648,795
  CATG D1 EXCEPTION VALUES:       13,431,210                          15,664,872
  CATG G1 EXCEPTION VALUES:       12,921,430                          12,712,949
 TOTAL TEST VALUES (4):           50,537,989                          52,150,109
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            2,607,505
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             49,542,604 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              50,537,989 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             54,757,614 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              52,500,781 (SEE ISD SUMMARY WORKSHEET)

 SOURCES:
 (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430
 (2) NUMBER OF PARCELS SAMPLED BY STAFF
 (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT
 (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES
 (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES